Camera optical lens

ABSTRACT

A camera optical lens is provided, including from an object side to an image side: a first lens; a second lens having negative refractive power; a third lens; a fourth lens; a fifth lens; a sixth lens; a seventh lens; an eighth lens; and a ninth lens, wherein the camera optical lens satisfies following conditions: 2.00≤f1/f≤5.50; and 1.50≤d15/d16≤9.00, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; d15 denotes an on-axis thickness of the eighth lens; and d16 denotes an on-axis distance from an image side surface of the eighth lens to an object side surface of the ninth lens. The above camera optical lens can meet design requirements for large aperture, wide-angle and ultra-thinness, while maintaining good imaging quality.

TECHNICAL FIELD

The present invention relates to the technical field of optical lensand, in particular, to a camera optical lens suitable for handheldterminal devices such as smart phones or digital cameras, and imagingdevices such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is continuously increasing, but in general,photosensitive devices of camera lens are nothing more than a ChargeCoupled Device (CCD) or a Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as progress of semiconductor manufacturing technologymakes a pixel size of the photosensitive devices become smaller, inaddition, a current development trend of electronic products requiresbetter performance with thinner and smaller dimensions, miniature cameralenses with good imaging quality therefore have become a mainstream inthe market.

In order to obtain better imaging quality, a camera lens traditionallyequipped in a camera of a mobile phone generally constitutes three,four, even five or six lenses. However, with development of technologyand increase in diversified requirements of users, a camera lensconstituted by nine lenses gradually appears in camera design, in casethat pixel area of the photosensitive device is continuously reduced andrequirements on image quality is continuously increased. Although thecommon camera lens constituted by nine lenses has good opticalperformances, its configurations such as refractive power, lens spacingand lens shape still need to be optimized, therefore the camera lens maynot meet design requirements for some optical performances such as largeaperture, wide-angle and ultra-thinness while maintaining good imagingquality.

SUMMARY

In view of the above problems, the present invention provides a cameraoptical lens, which may meet design requirements on some opticalperformances such as large aperture, wide-angle and ultra-thinness whilemaintaining good imaging quality.

Embodiments of the present invention provides a camera optical lens,including from an object side to an image side:

-   -   a first lens;    -   a second lens having negative refractive power;    -   a third lens;    -   a fourth lens;    -   a fifth lens;    -   a sixth lens;    -   a seventh lens;    -   an eighth lens; and    -   a ninth lens,    -   wherein the camera optical lens satisfies following conditions:

2.00≤f1/f≤5.50; and

1.50≤d15/d16≤9.00,

-   -   where    -   f denotes a focal length of the camera optical lens;    -   f1 denotes a focal length of the first lens;    -   d15 denotes an on-axis thickness of the eighth lens; and    -   d16 denotes an on-axis distance from an image side surface of        the eighth lens to an object side surface of the ninth lens.

As an improvement, wherein the camera optical lens satisfies a followingcondition:

1.00≤(R17+R18)/(R17−R18)≤3.50,

-   -   where    -   R17 denotes a central curvature radius of the object side        surface of the ninth lens; and    -   R18 denotes a central curvature radius of an image side surface        of the ninth lens.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−35.14≤(R1+R2)/(R1−R2)≤−3.11; and

0.02≤d1/TTL≤0.08,

-   -   where    -   R1 denotes a central curvature radius of an object side surface        of the first lens;    -   R2 denotes a central curvature radius of an image side surface        of the first lens;    -   d1 denotes an on-axis thickness of the first lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−8.12≤f2/f≤−2.48;

2.14≤(R3+R4)/(R3−R4)≤10.66; and

0.01≤d3/TTL≤0.05,

-   -   where    -   f2 denotes a focal length of the second lens;    -   R3 denotes a central curvature radius of an object side surface        of the second lens;    -   R4 denotes a central curvature radius of an image side surface        of the second lens;    -   d3 denotes an on-axis thickness of the second lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, the camera optical lens satisfies followingconditions:

0.48≤f3/f≤1.83;

−1.30≤(R5+R6)/(R5−R6)≤−0.16; and

0.03≤d5/TTL≤0.12,

-   -   where    -   f3 denotes a focal length of the third lens;    -   R5 denotes a central curvature radius of an object side surface        of the third lens;    -   R6 denotes a central curvature radius of an image side surface        of the third lens;    -   d5 denotes an on-axis thickness of the third lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, wherein the camera optical lens satisfies followingconditions:

2.22≤f4/f≤10.54;

−12.60≤(R7+R8)/(R7−R8)≤−2.54; and

0.02≤d7/TTL≤0.05,

-   -   where    -   f4 denotes a focal length of the fourth lens;    -   R7 denotes a central curvature radius of an object side surface        of the fourth lens;    -   R8 denotes a central curvature radius of an image side surface        of the fourth lens;    -   d7 denotes an on-axis thickness of the fourth lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−8.56≤f5/f≤−−2.36;

2.19≤(R9+R10)/(R9−R10)≤8.15; and

0.01≤d9/TTL≤0.03,

-   -   where    -   f5 denotes a focal length of the fifth lens;    -   R9 denotes a central curvature radius of an object side surface        of the fifth lens;    -   R10 denotes a central curvature radius of an image side surface        of the fifth lens;    -   d9 denotes an on-axis thickness of the fifth lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−21.54≤f6/f≤−4.42;

3.09≤(R11+R12)/(R11−R12)≤20.04; and

0.02≤d11/TTL≤0.08,

-   -   where    -   f6 denotes a focal length of the sixth lens;    -   R11 denotes a central curvature radius of an object side surface        of the sixth lens;    -   R12 denotes a central curvature radius of an image side surface        of the sixth lens;    -   d11 denotes an on-axis thickness of the sixth lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−45.71≤f7/f≤−5.01;

5.48≤(R13+R14)/(R13−R14)≤33.29; and

0.03≤d13/TTL≤0.09,

-   -   where    -   f7 denotes a focal length of the seventh lens;    -   R13 denotes a central curvature radius of an object side surface        of the seventh lens;    -   R14 denotes a central curvature radius of an image side surface        of the seventh lens;    -   d13 denotes an on-axis thickness of the seventh lens; and    -   TTL denotes a total optical length of the camera optical lens.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−0.36≤f8/f≤−2.87;

−6.01≤(R15+R16)/(R15−R16)≤0.37; and

0.07≤d15/TTL≤0.24,

-   -   where    -   f8 denotes a focal length of the eighth lens;    -   R15 denotes a central curvature radius of an object side surface        of the eighth lens;    -   R16 denotes a central curvature radius of the image side surface        of the eighth lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, wherein the camera optical lens satisfies followingconditions:

−2.21≤f9/f≤−0.35; and

0.02≤d17/TTL≤0.09,

-   -   where    -   f9 denotes a focal length of the ninth lens;    -   d17 denotes an on-axis thickness of the ninth lens; and    -   TTL denotes a total optical length from an object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

The present invention has following beneficial effects: the cameraoptical lens according to the present invention not only has excellentoptical performances, but also has large aperture, wide-angle, andultra-thinness properties, which is especially suitable for mobile phonecamera lens components composed of high-pixel CCD, CMOS and otherimaging elements and WEB camera lens.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiments may be better understood withreference to following drawings. The components in the drawings are notnecessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present invention. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a structural schematic diagram of a camera optical lensaccording to Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a structural schematic diagram of a camera optical lensaccording to Embodiment 2 of the present invention;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a structural schematic diagram of a camera optical lensaccording to Embodiment 3 of the present invention;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

In order to better illustrate the objectives, technical solutions andadvantages of the present invention, the present invention will bedescribed in further detail below with reference to the accompanyingdrawings and embodiments. It should be understood that the specificembodiments described herein are only used to explain the presentinvention but are not used to limit the present invention.

Embodiment 1

Referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present invention. The camera optical lens 10 includes ninelenses. The camera optical lens 10 includes, from an object side to animage side, an aperture S1, a first lens L1, a second lens L2, a thirdlens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventhlens L7, an eighth lens L8, and a ninth lens L9. An optical element suchas an optical filter GF may be arranged between the ninth lens L9 and animage plane Si.

In this embodiment, the first lens L1 has positive refractive power, thesecond lens L2 has negative refractive power, the third lens L3 haspositive refractive power, the fourth lens L4 has positive refractivepower, the fifth lens L5 has negative refractive power, the sixth lensL6 has negative refractive power, the seventh lens L7 has negativerefractive power, the eighth lens L8 has positive refractive power, andthe ninth lens L9 has negative refractive power. It may be understoodthat, in other embodiments, refractive power of the third lens L3, thefourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lensL7, the eighth lens L8 and the ninth lens L9 may change.

In this embodiment, the first lens L1, the second lens L2, the thirdlens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, theseventh lens L7, the eighth lens L8, and the ninth lens L9 are each madeof a plastic material. In other embodiments, the lenses may also be madeof a material other than the plastic material.

In this embodiment, a focal length of the camera optical lens 10 isdefined as f, and a focal length of the first lens L1 is defined as f1.The focal length f and the focal length f1 satisfy a followingcondition: 2.00≤f1/f≤5.50, which specifies a ratio of the focal lengthof the first lens to the focal length of the camera optical lens. Withinthe range of the above condition, spherical aberration and fieldcurvature of the system may be effectively balanced.

An on-axis thickness of the eighth lens L8 is defined as d15, an on-axisdistance from an image side surface of the eighth lens L8 to an objectside surface of the ninth lens L9 is defined as d16. The on-axisthickness d15 and the on-axis distance d16 satisfy a followingcondition: 1.50≤d15/d16≤9.00. Within the range of the above condition,it is beneficial to process lenses and assemble the camera lens.

A central curvature radius of an object side surface of the ninth lensL9 is defined as R17, and a central curvature radius of an image sidesurface of the ninth lens L9 is defined as R18. The central curvatureradius R17 and the central curvature radius R18 satisfy a followingcondition: 1.00≤(R17+R18)/(R17−R18)≤3.50, which specifies a shape of theninth lens L9. Within the specified range of the condition, a degree ofdeflection of light passing through the lens may be alleviated, andaberrations may be effectively reduced.

In this embodiment, the object side surface of the first lens L1 isconvex in a paraxial region, and the image side surface of the firstlens L1 is concave in the paraxial region.

A central curvature radius of the object side surface of the first lensL1 is defined as R1, and a central curvature radius of the image sidesurface of the first lens L1 is defined as R2. The central curvatureradius R1 and the central curvature radius R2 satisfy a followingcondition: −35.14≤(R1+R2)/(R1−R2)≤−3.11. The shape of the first lens L1is reasonably controlled so that the first lens L1 may effectivelycorrect spherical aberration of the system.

Optionally, the central curvature radius R1 and the central curvatureradius R2 satisfy a following condition: −21.96≤(R1+R2)/(R1−R2)≤−3.89.

The on-axis thickness of the first lens L1 is defined as d1, and a totaloptical length from the object side surface of the first lens L1 to theimage plane Si of the camera optical lens 10 along an optic axis isdefined as TTL. The on-axis thickness d1 and the total optical lengthTTL satisfy a following condition: 0.02≤d1/TTL≤0.08. Within the range ofthe above condition, it is beneficial to achieve an ultra-thinnesseffect. Optionally, the on-axis thickness d1 and the total opticallength TTL satisfy a following condition: 0.03≤d1/TTL≤0.07.

In this embodiment, the object side surface of the second lens L2 isconvex in a paraxial region, and the image side surface of the secondlens L2 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, a focallength of the second lens L2 is defined as f2. The focal length f andthe focal length f2 satisfy a following condition: −8.12≤f2/f≤−2.48. Bycontrolling the negative refractive power of the second lens L2 in thereasonable range, it is beneficial to correct the aberration of theoptical system. Optionally, the focal length f and the focal length f2satisfy a following condition: −5.08≤f2/f≤−3.10.

A central curvature radius of an object side surface of the second lensL2 is defined as R3, and a central curvature radius of an image sidesurface of the second lens L2 is defined as R4. The central curvatureradius R3 and the central curvature radius R4 satisfy a followingcondition: 2.14≤(R3+R4)/(R3−R4)≤10.66, which specifies a shape of thesecond lens L2. Within the range of the above condition, as the lensbecomes ultra-thinness and wide-angle, it is beneficial to correcton-axis chromatic aberration. Optionally, the central curvature radiusR3 and the central curvature radius R4 satisfy a following condition:3.42≤(R3+R4)/(R3−R4)≤8.53.

An on-axis thickness of the second lens L2 is defined as d3, and a totaloptical length from the object side surface of the first lens L1 to theimage plane Si of the camera optical lens 10 along an optic axis isdefined as TTL. The on-axis thickness d3 and the total optical lengthTTL satisfy a following condition: 0.01≤d3/TTL≤0.05. Within the range ofthe above condition, it is beneficial to achieve an ultra-thinnesseffect. Optionally, the on-axis thickness d3 and the total opticallength TTL satisfy a following condition: 0.02≤d3/TTL≤0.04.

In this embodiment, the object side surface of the third lens L3 isconvex in a paraxial region, and the image side surface of the thirdlens L3 is convex in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the third lens L3 is defined as f3. The focal length fand the focal length f3 satisfy a following condition: 0.48≤f3/f≤1.83.With appropriate configuration of the refractive power, the system mayobtain better imaging quality and lower sensitivity. Optionally, thefocal length f and the focal length f3 satisfy a following condition:0.77≤f3/f≤1.46.

A central curvature radius of an object side surface of the third lensL3 is defined as R5, and a central curvature radius of an image sidesurface of the third lens L3 is defined as R6. The central curvatureradius R5 and the central curvature radius R6 satisfy a followingcondition: −1.30≤(R5+R6)/(R5−R6)≤−0.16, which specifies a shape of thethird lens L3. Within the specified range of the condition, a degree ofdeflection of light passing through the lens may be alleviated, andaberrations may be effectively reduced. Optionally, the centralcurvature radius R5 and the central curvature radius R6 satisfy afollowing condition: −0.81≤(R5+R6)/(R5−R6)≤−0.20.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the third lens L3 isdefined as d5. The on-axis thickness d3 and the total optical length TTLsatisfy a following condition: 0.03≤d5/TTL≤0.12. Within the range of theabove condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d3 and the total optical length TTLsatisfy a following condition: 0.05≤d5/TTL≤0.10.

In this embodiment, the object side surface of the fourth lens L4 isconvex in a paraxial region, and the image side surface of the fourthlens L4 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the fourth lens L4 is defined as f4. The focal length fand the focal length f4 satisfy a following condition: 2.22≤f4/f≤10.54.With appropriate configuration of the refractive power, the system mayobtain better imaging quality and lower sensitivity. Optionally, thefocal length f and the focal length f4 satisfy a following condition:3.56≤f4/f≤8.43.

A central curvature radius of an object side surface of the fourth lensL4 is defined as R7, and a central curvature radius of an image sidesurface of the fourth lens L4 is defined as R8. The central curvatureradius R7 and the central curvature radius R8 satisfy a followingcondition: −12.60≤(R7+R8)/(R7−R8)≤−2.54, which specifies a shape of thefourth lens L4. Within the range of the above condition, it isbeneficial to correct the aberration of off-axis angle with thedevelopment of ultra-thinness and wide-angle. Optionally, the centralcurvature radius R7 and the central curvature radius R8 satisfy afollowing condition: −7.87≤(R7+R8)/(R7−R8)≤−3.18.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the fourth lens L4 isdefined as d7. The on-axis thickness d7 and the total optical length TTLsatisfy a following condition: 0.02≤d7/TTL≤0.05. Within the range of theabove condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d7 and the total optical length TTLsatisfy a following condition: 0.03≤d7/TTL≤0.04.

In this embodiment, the object side surface of the fifth lens L5 isconvex in a paraxial region, and the image side surface of the fifthlens L5 is concave in the paraxial region.

A focal length of the fifth lens L5 is defined as f5, and the focallength of the camera optical lens 10 is defined as f. The focal length fand the focal length f5 satisfy a following condition: −8.56≤f5/f≤−2.36.With appropriate configuration of the refractive power, the system mayobtain better imaging quality and lower sensitivity. Optionally, thefocal length f and the focal length f5 satisfy a following condition:−5.35≤f5/f≤−2.95.

A central curvature radius of an object side surface of the fifth lensL5 is defined as R9, and a central curvature radius of an image sidesurface of the fifth lens L5 is defined as R10. The central curvatureradius R9 and the central curvature radius R10 satisfy a followingcondition: 2.19≤(R9+R10)/(R9−R10)≤8.15, which specifies a shape of thefifth lens L5. Within the range of the above condition, it is beneficialto correct the aberration of off-axis angle with the development ofultra-thinness and wide-angle. Optionally, the central curvature radiusR9 and the central curvature radius R10 satisfy a following condition:3.50≤(R9+R10)/(R9−R10)≤6.52.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the fifth lens L5 isdefined as d9. The on-axis thickness d9 and the total optical length TTLsatisfy a following condition: 0.01≤d9/TTL≤0.03. Within the range of thecondition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d9 and the total optical length TTLsatisfy a following condition: 0.02≤d9/TTL≤0.03.

In this embodiment, the object side surface of the sixth lens L6 isconvex in a paraxial region, and the image side surface of the sixthlens L6 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the sixth lens L6 is defined as f6. The focal length fand the focal length f6 satisfy a following condition:−21.54≤f6/f≤−4.42. With appropriate configuration of the refractivepower, the system may obtain better imaging quality and lowersensitivity. Optionally, the focal length f and the focal length f6satisfy a following condition: −13.46≤f6/f≤−5.52.

A central curvature radius of an object side surface of the sixth lensL6 is defined as R11, and a central curvature radius of an image sidesurface of the sixth lens L6 is defined as R12. The central curvatureradius R11 and the central curvature radius R12 satisfy a followingcondition: 3.09≤(R11+R12)/(R11−R12)≤20.04, which specifies a shape ofthe sixth lens L6. Within the range of the above condition, it isbeneficial to correct the aberration of off-axis angle with thedevelopment of ultra-thinness and wide-angle. Optionally, the centralcurvature radius R11 and the central curvature radius R12 satisfy afollowing condition: 4.95≤(R11+R12)/(R11−R12)≤16.03.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the sixth lens L6 isdefined as d11. The on-axis thickness d11 and the total optical lengthTTL satisfy a following condition: 0.02≤d11/TTL≤0.08. Within the rangeof the condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d11 and the total optical length TTLsatisfy a following condition: 0.03≤d11/TTL≤0.07.

In this embodiment, the object side surface of the seventh lens L7 isconvex in a paraxial region, and the image side surface of the seventhlens L7 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the seventh lens L7 is defined as P. The focal length fand the focal length P satisfy a following condition: −45.71≤f7/f≤−5.01.With appropriate configuration of the refractive power, the system mayobtain better imaging quality and lower sensitivity. Optionally, thefocal length f and the focal length P satisfy a following condition:−28.57≤f7/f≤−6.27.

A central curvature radius of an object side surface of the seventh lensL7 is defined as R13, and a central curvature radius of an image sidesurface of the seventh lens L7 is defined as R14. The central curvatureradius R13 and the central curvature radius R14 satisfy a followingcondition: 5.48≤(R13+R14)/(R13−R14)≤33.29, which specifies a shape ofthe seventh lens L7. Within the range of the above condition, it isbeneficial to correct the aberration of off-axis angle with thedevelopment of ultra-thinness and wide-angle. Optionally, the centralcurvature radius R13 and the central curvature radius R14 satisfy afollowing condition: 8.78≤(R13+R14)/(R13−R14)≤26.63.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the seventh lens L7 isdefined as d13. The on-axis thickness d13 and the total optical lengthTTL satisfy a following condition: 0.03≤d13/TTL≤0.09. Within the rangeof the condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d13 and the total optical length TTLsatisfy a following condition: 0.05≤d13/TTL≤0.08.

In this embodiment, the object side surface of the eighth lens L8 isconvex in a paraxial region, and the image side surface of the eighthlens L8 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the eighth lens L8 is defined as f8. The focal length fand the focal length f8 satisfy a following condition: 0.36≤f8/f≤2.87.With appropriate configuration of the refractive power, the system mayobtain better imaging quality and lower sensitivity. Optionally, thefocal length f and the focal length f8 satisfy a following condition:0.57≤f8/f≤2.30.

A central curvature radius of an object side surface of the eighth lensL8 is defined as R15, and a central curvature radius of an image sidesurface of the eighth lens L8 is defined as R16. The central curvatureradius R15 and the central curvature radius R16 satisfy a followingcondition: −6.01≤(R15+R16)/(R15−R16)≤0.37, which specifies a shape ofthe eighth lens. Within the range of the above condition, it isbeneficial to correct the aberration of off-axis angle with thedevelopment of ultra-thinness and wide-angle. Optionally, the centralcurvature radius R15 and the central curvature radius R16 satisfy afollowing condition: −3.76≤(R15+R16)/(R15−R16)≤0.30.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the eighth lens L8 isdefined as d15. The on-axis thickness d15 and the total optical lengthTTL satisfy a following condition: 0.07≤d15/TTL≤0.24. Within the rangeof the above condition, it is beneficial to achieve an ultra-thinnesseffect. Optionally, the on-axis thickness d15 and the total opticallength TTL satisfy a following condition: 0.10≤d15/TTL≤0.19.

In this embodiment, the object side surface of the ninth lens L9 isconvex in a paraxial region, and the image side surface of the ninthlens L9 is concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and afocal length of the ninth lens L9 is defined as f9. The focal length fand the focal length f9 satisfy a following condition: −2.21≤f9/f≤−0.35.With appropriate configuration of the refractive power, the system mayobtain better imaging quality and lower sensitivity. Optionally, thefocal length f and the focal length f9 satisfy a following condition:−1.38≤f9/f≤−0.44.

A total optical length from the object side surface of the first lens L1to the image plane Si of the camera optical lens 10 along an optic axisis defined as TTL, and an on-axis thickness of the ninth lens L9 isdefined as d17. The on-axis thickness d17 and the total optical lengthTTL satisfy a following condition: 0.02≤d17/TTL≤0.09. Within the rangeof the condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d17 and the total optical length TTLsatisfy a following condition: 0.03≤d17/TTL≤0.08.

In this embodiment, an image height of the camera optical lens 10 is IH,and a total optical length from the object side surface of the firstlens L1 to the image plane Si of the camera optical lens 10 along anoptic axis is defined as TTL. The image height IH and the total opticallength TTL satisfy a following condition: TTL/IH≤1.21. Within the rangeof the condition, it is beneficial to achieve an ultra-thinness effect.

In this embodiment, a field of view FOV of the camera optical lens 10 isgreater than or equal to 89.00°, so that a wide-angle effect isachieved.

In this embodiment, an F number FNO of the camera optical lens 10 isless than or equal to 1.95, so that a large aperture is achieved,thereby obtaining a good imaging quality of the camera optical lens.

When the above conditions are satisfied, the camera optical lens 10 maymeet the design requirements for large aperture, wide-angle andultra-thinness while maintaining good optical performances. According toproperties of the camera optical lens 10, the camera optical lens 10 isespecially suitable for mobile phone camera lens components composed ofhigh-pixel CCD, CMOS and other imaging elements and WEB camera lens.

The camera optical lens 10 of the present invention will be describedbelow with examples. The symbols recorded in each example will bedescribed as follows. The focal length, on-axis distance, centralcurvature radius, on-axis thickness, inflection point position, andarrest point position are each in unit of millimeter (mm).

TTL denotes a total optical length (on-axis distance from the objectside surface of the first lens L1 to the image plane Si), with a unit ofmillimeter (mm).

F number FNO denotes a ratio of an effective focal length of the cameraoptical lens to an entrance pupil diameter.

Optionally, the object side surface and/or the image side surface of thelens may be provided with inflection points and/or arrest points inorder to meet high-quality imaging requirements. The description belowmay be referred to in specific embodiments as follows.

Design data of the camera optical lens 10 according to Embodiment 1 ofthe present invention are shown in Tables 1 and 2.

TABLE 1 R d nd vd S1 ∞  d0= −0.519 R1 3.415  d1= 0.539 nd1 1.5450 v155.81 R2 5.280  d2= 0.409 R3 11.983  d3= 0.289 nd2 1.6700 v2 19.39 R47.438  d4= 0.069 R5 8.470  d5= 0.643 nd3 1.5450 v3 55.81 R6 −13.874  d6=0.048 R7 8.706  d7= 0.344 nd4 1.5444 v4 55.82 R8 11.992  d8= 0.112 R910.010  d9= 0.221 nd5 1.6610 v5 20.53 R10 6.897 d10= 0.942 R11 12.808d11= 0.542 nd6 1.6610 v6 20.53 R12 9.241 d12= 0.506 R13 6.176 d13= 0.599nd7 1.6610 v7 20.53 R14 5.144 d14= 0.471 R15 4.344 d15= 1.252 nd8 1.5450v8 55.81 R16 8.678 d16= 0.830 R17 53.268 d17= 0.593 nd9 1.5450 v9 55.81R18 4.259 d18= 0.375 R19 ∞ d19= 0.210 ndg 1.5168 vg 64.17 R20 ∞ d20=0.613 The reference signs are explained as follows. S1: aperture; R:central curvature radius of an optical surface; R1: central curvatureradius of the object side surface of the first lens L1; R2: centralcurvature radius of the image side surface of the first lens L1; R3:central curvature radius of the object side surface of the second lensL2; R4: central curvature radius of the image side surface of the secondlens L2; R5: central curvature radius of the object side surface of thethird lens L3; R6: central curvature radius of the image side surface ofthe third lens L3; R7: central curvature radius of the object sidesurface of the fourth lens L4; R8: central curvature radius of the imageside surface of the fourth lens L4; R9: central curvature radius of theobject side surface of the fifth lens L5; R10: central curvature radiusof the image side surface of the fifth lens L5; R11: central curvatureradius of the object side surface of the sixth lens L6; R12: centralcurvature radius of the image side surface of the sixth lens L6; R13:central curvature radius of the object side surface of the seventh lensL7; R14: central curvature radius of the image side surface of theseventh lens L7; R15: central curvature radius of the object sidesurface of the eighth lens L8; R16: central curvature radius of theimage side surface of the eighth lens L8; R17: central curvature radiusof the object side surface of the ninth lens L9; R18: central curvatureradius of the image side surface of the ninth lens L9; R19: centralcurvature radius of the object side surface of the optical filter GF;R20: central curvature radius of the image side surface of the opticalfilter GF; d: on-axis thickness of a lens and an on-axis distancebetween lenses; d0: on-axis distance from the aperture S1 to the objectside surface of the first lens L1; d1: on-axis thickness of the firstlens L1; d2: on-axis distance from the image side surface of the firstlens L1 to the object side surface of the second lens L2; d3: on-axisthickness of the second lens L2; d4: on-axis distance from the imageside surface of the second lens L2 to the object side surface of thethird lens L3; d5: on-axis thickness of the third lens L3; d6: on-axisdistance from the image side surface of the third lens L3 to the objectside surface of the fourth lens L4; d7: on-axis thickness of the fourthlens L4; d8: on-axis distance from the image side surface of the fourthlens L4 to the object side surface of the fifth lens L5; d9: on-axisthickness of the fifth lens L5; d10: on-axis distance from the imageside surface of the fifth lens L5 to the object side surface of thesixth lens L6; d11: on-axis thickness of the sixth lens L6; d12: on-axisdistance from the image side surface of the sixth lens L6 to the objectside surface of the seventh lens L7; d13: on-axis thickness of theseventh lens L7; d14: on-axis distance from the image side surface ofthe seventh lens L7 to the object side surface of the eighth lens L8;d15: on-axis thickness of the eighth lens L8; d16: on-axis distance fromthe image side surface of the eighth lens L8 to the object side surfaceof the ninth lens L9; d17: on-axis thickness of the ninth lens L9; d18:on-axis distance from the image side surface of the ninth lens L9 to theobject side surface of the optical filter GF; d19: on-axis thickness ofthe optical filter GF; d20: on-axis distance from the image side surfaceof the optical filter GF to the image plane; nd: refractive index of ad-line; nd1: refractive index of the d-line of the first lens L1; nd2:refractive index of the d-line of the second lens L2; nd3: refractiveindex of the d-line of the third lens L3; nd4: refractive index of thed-line of the fourth lens L4; nd5: refractive index of the d-line of thefifth lens L5; nd6: refractive index of the d-line of the sixth lens L6;nd7: refractive index of the d-line of the seventh lens L7; nd8:refractive index of the d-line of the eighth lens L8; nd9: refractiveindex of the d-line of the ninth lens L9; ndg: refractive index of thed-line of the optical filter GF; vd: Abbe number; v1: Abbe number of thefirst lens L1; v2: Abbe number of the second lensL2; v3: Abbe number ofthe third lens L3; v4: Abbe number of the fourth lens L4; v5: Abbenumber of the fifth lens L5; v6: Abbe number of the sixth lens L6; v7:Abbe number of the seventh lens L7; v8: Abbe number of the eighth lensL8; v9: Abbe number of the ninth lens L9; vg: Abbe number of the opticalfilter GF.

Table 2 shows aspherical surface data of each lens in the camera opticallens 10 according to Embodiment 1 of the present invention.

TABLE 2 Conic coefficient Aspherical surface coefficient k A4 A6 A8 A10A12 R1 2.3604E−02 −2.3424E−03 −2.8686E−04 −2.8633E−04 9.0803E−066.4004E−05 R2 −7.8104E+00 2.4012E−03 −1.1263E−03 −1.0220E−03 1.0771E−03−6.5338E−04 R3 1.1368E+01 −1.6958E−02 −7.1910E−04 1.2868E−04 5.3949E−04−4.7023E−04 R4 −6.8969E+01 3.2723E−03 −1.2895E−02 7.0244E−03 −1.6167E−03−9.6735E−05 R5 −1.4916E+01 −9.9896E−03 −1.8068E−03 −1.8891E−042.1848E−03 −1.3887E−03 R6 3.7876E+01 −5.0338E−02 3.9022E−02 −2.2304E−029.1784E−03 −2.5461E−03 R7 −5.1003E+01 −2.0751E−02 2.0973E−02 −1.0508E−022.6653E−03 −3.4933E−04 R8 −4.8972E+00 2.1215E−02 −2.2904E−02 1.4594E−02−6.8227E−03 1.8079E−03 R9 1.4709E+01 −4.4985E−03 1.7660E−03 −2.2068E−033.1687E−03 −1.9924E−03 R10 6.9017E+00 −1.3293E−02 7.2562E−03 −3.5416E−032.0750E−03 −7.4534E−04 R11 −7.0281E+01 −7.2790E−03 3.0571E−04−1.0508E−03 8.0910E−04 −3.5454E−04 R12 −4.8840E+01 −6.1832E−039.0192E−04 −1.4657E−03 7.7701E−04 −2.3164E−04 R13 −4.2477E+01 2.7038E−033.1755E−04 −9.5947E−04 3.3088E−04 −7.6056E−05 R14 −3.5140E+01−2.2041E−03 5.3373E−04 −9.6864E−05 −6.1465E−05 2.1140E−05 R15−1.8454E+01 4.0306E−03 −5.3915E−03 1.1979E−03 −1.7871E−04 1.6509E−05 R16−5.5310E−01 7.7268E−03 −4.6516E−03 7.7335E−04 −8.0614E−05 5.2795E−06 R17−9.8759E+01 −1.7832E−02 1.0501E−03 −1.9717E−06 −2.1122E−06 1.0252E−07R18 −1.1609E+01 −1.1136E−02 1.1896E−04 7.0113E−05 −6.0220E−06 2.3267E−07Conic coefficient Aspherical surface coefficient k A14 A16 A18 A20 R12.3604E−02 −4.7258E−05 1.4338E−05 −2.1477E−06 1.2726E−07 R2 −7.8104E+002.2983E−04 −4.6981E−05 5.1253E−06 −2.2769E−07 R3 1.1368E+01 1.9607E−04−4.5309E−05 5.5996E−06 −2.8777E−07 R4 −6.8969E+01 9.4765E−05 −3.4713E−06−2.7904E−06 2.9714E−07 R5 −1.4916E+01 3.2178E−04 −1.1633E−05 −5.6202E−065.7830E−07 R6 3.7876E+01 4.2516E−04 −3.0765E−05 −9.6024E−07 2.0574E−07R7 −5.1003E+01 −1.1247E−05 1.5311E−05 −2.7071E−06 1.6909E−07 R8−4.8972E+00 −2.3935E−04 8.5009E−06 1.2391E−06 −1.0171E−07 R9 1.4709E+016.8025E−04 −1.3382E−04 1.4301E−05 −6.4830E−07 R10 6.9017E+00 1.5143E−04−1.7945E−05 1.1860E−06 −3.6924E−08 R11 −7.0281E+01 9.2503E−05−1.4895E−05 1.3771E−06 −5.7197E−08 R12 −4.8840E+01 4.1605E−05−4.5280E−06 2.7636E−07 −7.2407E−09 R13 −4.2477E+01 1.2133E−05−1.2519E−06 7.1985E−08 −1.7031E−09 R14 −3.5140E+01 −2.9889E−062.2381E−07 −8.7283E−09 1.3990E−10 R15 −1.8454E+01 −9.0198E−07 2.8599E−08−4.8925E−10 3.5053E−12 R16 −5.5310E−01 −2.1051E−07 4.9209E−09−6.1681E−11 3.1891E−13 R17 −9.8759E+01 −2.4093E−09 3.1514E−11−2.1997E−13 6.4122E−16 R18 −1.1609E+01 −4.9007E−09 5.7479E−11−3.4993E−13 8.5666E−16

Here, k denotes a conic coefficient, and A4, A6, A8, A10, Al2, A14, A16,A18, and A20 denote an aspherical coefficient, respectively.

y=(x ² /R)/{1+[1−(k+1)(x ² /R ²)]^(1/2) }+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (1)

Here, x denotes a vertical distance between a point on an asphericalcurve and the optical axis, and y denotes a depth of the asphericalsurface, i.e., a vertical distance between a point on the asphericalsurface having a distance x from the optical axis and a tangent planetangent to a vertex on an aspherical optical axis.

For convenience, the aspherical surface of each lens surface uses theaspherical surface shown in the above formula (1). However, the presentinvention is not limited to the aspherical polynomial form shown in theformula (1).

Design data of the inflection point and the arrest point of each lens inthe camera optical lens 10 according to Embodiment 1 of the presentinvention are shown in Tables 3 and 4. Here, P1R1 and P1R2 denote theobject side surface and image side surface of the first lens

L1, respectively. P2R1 and P2R2 denote the object side surface and imageside surface of the second lens L2, respectively. P3R1 and P3R2 denotethe object side surface and image side surface of the third lens L3,respectively. P4R1 and P4R2 denote the object side surface and imageside surface of the fourth lens L4, respectively. P5R1 and P5R2 denotethe object side surface and image side surface of the fifth lens L5,respectively. P6R1 and P6R2 denote the object side surface and imageside surface of the sixth lens L6, respectively. P7R1 and P7R2 denotethe object side surface and image side surface of the seventh lens L7,respectively. P8R1 and P8R2 denote the object side surface and imageside surface of the eighth lens L8, respectively. P9R1 and P9R2 denotethe object side surface and image side surface of the ninth lens L9,respectively. Data in an “inflection point position” column are avertical distance from an inflexion point provided on a surface of eachlens to the optical axis of the camera optical lens 10. Data in an“arrest point position” column are a vertical distance from an arrestpoint provided on the surface of each lens to the optical axis of thecamera optical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 1.665 / / P1R2 11.335 / / P2R1 1 0.655 / / P2R2 1 0.805 / / P3R1 3 0.875 1.805 1.915P3R2 1 1.935 / / P4R1 2 1.185 2.005 / P4R2 1 1.115 / / P5R1 1 1.995 / /P5R2 1 2.165 / / P6R1 1 0.785 / / P6R2 1 0.895 / / P7R1 2 1.315 3.135 /P7R2 2 1.255 3.785 / P8R1 2 1.075 3.405 / P8R2 2 1.405 3.955 / P9R1 30.305 3.175 6.035 P9R2 3 0.985 5.305 6.135

TABLE 4 Number of arrest Arrest point Arrest point points position 1position 2 P1R1 0 / / P1R2 1 1.965 / P2R1 1 1.135 / P2R2 1 1.485 / P3R11 1.665 / P3R2 0 / / P4R1 1 1.675 / P4R2 1 1.595 / P5R1 0 / / P5R2 0 / /P6R1 1 1.345 / P6R2 1 1.545 / P7R1 1 2.045 / P7R2 1 2.165 / P8R1 1 1.865/ P8R2 1 2.245 / P9R1 2 0.515 5.555 P9R2 1 1.895 /

FIG. 2 and FIG. 3 are schematic diagrams of a longitudinal aberrationand a lateral color of the camera optical lens 10 after light having awavelength of 656 nm, 587 nm, 546 nm, 486 nm, and 435 nm passes throughthe camera optical lens 10 according to Embodiment 1, respectively. FIG.4 is a schematic diagram of a field curvature and a distortion of thecamera optical lens 10 after light having a wavelength of 546 nm passesthrough the camera optical lens 10 according to Embodiment 1. A fieldcurvature S in FIG. 4 is a field curvature in a sagittal direction, andT is a field curvature in a meridian direction.

Table 13 below shows numerical values corresponding to various numericalvalues in Embodiments 1, 2, and 3 and parameters specified in theconditions.

As shown in Table 13, Embodiment 1 satisfies various conditions.

In this embodiment, an entrance pupil diameter ENPD of the cameraoptical lens 10 is 4.090 mm, a full-field image height IH is 8.000 mm,and a field of view FOV in a diagonal direction is 89.00°. The satisfydesign requirements for large aperture, wide-angle and ultra-thinness.The on-axis and off-axis chromatic aberrations are fully corrected,thereby achieving excellent optical performances.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1, and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween are listed below.

Design data of the camera optical lens 20 according to Embodiment 2 ofthe present invention are shown in Tables 5 and 6.

TABLE 5 R d nd vd S1 ∞  d0= −0.448 R1 3.341  d1= 0.408 nd1 1.5450 v155.81 R2 4.009  d2= 0.333 R3 7.562  d3= 0.289 nd2 1.6700 v2 19.39 R45.512  d4= 0.111 R5 5.781  d5= 0.721 nd3 1.5450 v3 55.81 R6 −14.851  d6=0.069 R7 10.546  d7= 0.344 nd4 1.5444 v4 55.82 R8 16.825  d8= 0.131 R910.382  d9= 0.221 nd5 1.6610 v5 20.53 R10 6.829 d10= 1.003 R11 7.650d11= 0.344 nd6 1.6610 v6 20.53 R12 6.540 d12= 0.566 R13 5.636 d13= 0.607nd7 1.6610 v7 20.53 R14 5.150 d14= 0.533 R15 7.226 d15= 1.346 nd8 1.5450v8 55.81 R16 57.038 d16= 0.303 R17 3.705 d17= 0.601 nd9 1.5450 v9 55.81R18 1.958 d18= 0.700 R19 ∞ d19= 0.210 ndg 1.5168 vg 64.17 R20 ∞ d20=0.767

Table 6 shows aspherical surface data of each lens in the camera opticallens 20 according to Embodiment 2 of the present invention.

TABLE 6 Conic coefficient Aspherical surface coefficient k A4 A6 A8 A10A12 R1 −1.9752E−01 −3.0641E−03  8.3914E−05 −1.5386E−03  1.0404E−03−4.8568E−04 R2 −6.9397E+00  9.1391E−03 −2.9201E−03 −7.0451E−04 6.0422E−04 −2.9427E−04 R3  5.0837E+00 −1.9564E−02  3.2597E−03−4.8290E−03  3.4900E−03 −1.5047E−03 R4 −4.4731E+01  8.1841E−03−1.2905E−02  5.3488E−03 −1.5275E−03  5.4477E−04 R5 −1.2223E+01−9.8104E−03  4.8912E−03 −5.7855E−03  4.0599E−03 −1.4979E−03 R6 3.9176E+01 −4.8593E−02  3.7618E−02 −2.2399E−02  1.0038E−02 −3.1853E−03R7 −6.1119E+01 −2.6379E−02  2.9213E−02 −1.8299E−02  8.1990E−03−2.8871E−03 R8  6.4446E+00  1.5809E−02 −1.3314E−02  5.3087E−03−1.3020E−03 −1.8654E−04 R9  1.5827E+01  1.4017E−04 −3.1071E−03 1.5694E−04  1.7410E−03 −1.1155E−03 R10  6.4690E+00 −7.7856E−03 1.9986E−03 −5.6900E−04  7.1345E−04 −2.6718E−04 R11 −3.3626E+01−5.3288E−03  6.9101E−04 −1.6891E−03  9.6909E−04 −3.2031E−04 R12−4.9868E+01  3.2931E−03 −4.3138E−03  4.2606E−04  2.4128E−04 −1.2051E−04R13 −2.3999E+01 −3.1009E−04  2.6051E−03 −2.2846E−03  8.4087E−04−2.0281E−04 R14 −2.8776E+01  5.1948E−03 −2.8971E−03  7.8345E−04−2.1434E−04  4.0261E−05 R15 −3.2501E+01  9.2906E−03 −5.8419E−03 1.0517E−03 −1.5893E−04  1.7175E−05 R16 −8.6925E+01  2.0339E−02−6.1255E−03  7.8634E−04 −6.3990E−05  3.3928E−06 R17 −1.6939E+01−2.5917E−02  3.0422E−03 −2.1513E−04  1.0112E−05 −3.1339E−07 R18−5.8953E+00 −1.9587E−02  2.0660E−03 −1.3310E−04  5.5666E−06 −1.5403E−07Conic coefficient Aspherical surface coefficient k A14 A16 A18 A20 R1−1.9752E−01 1.3674E−04 −2.4043E−05 2.4123E−06 −1.0670E−07 R2 −6.9397E+008.0329E−05 −1.5069E−05 1.9447E−06 −1.1315E−07 R3  5.0837E+00 3.9604E−04−6.1271E−05 5.0762E−06 −1.6464E−07 R4 −4.4731E+01 −2.5728E−04  7.9824E−05 −1.2427E−05   7.5285E−07 R5 −1.2223E+01 2.7073E−04−1.5112E−05 −1.7004E−06   1.9245E−07 R6  3.9176E+01 6.8526E−04−9.4650E−05 7.6541E−06 −2.7785E−07 R7 −6.1119E+01 7.2240E−04 −1.1631E−041.0837E−05 −4.4389E−07 R8  6.4446E+00 2.0157E−04 −5.0364E−05 5.6574E−06−2.4522E−07 R9  1.5827E+01 3.4565E−04 −6.1149E−05 5.9253E−06 −2.4631E−07R10  6.4690E+00 4.1358E−05 −2.6444E−06 3.3697E−08 −8.2453E−10 R11−3.3626E+01 6.5738E−05 −8.8158E−06 7.2789E−07 −2.8457E−08 R12−4.9868E+01 2.6106E−05 −3.3065E−06 2.4073E−07 −7.6749E−09 R13−2.3999E+01 3.2221E−05 −3.2108E−06 1.7787E−07 −4.0990E−09 R14−2.8776E+01 −4.7026E−06   3.2599E−07 −1.2282E−08   1.9401E−10 R15−3.2501E+01 −1.1123E−06   4.0499E−08 −7.6376E−10   5.8045E−12 R16−8.6925E+01 −1.1322E−07   2.2570E−09 −2.4359E−11   1.0901E−13 R17−1.6939E+01 6.2482E−09 −7.6526E−11 5.2123E−13 −1.5055E−15 R18−5.8953E+00 2.7513E−09 −2.9938E−11 1.7851E−13 −4.4438E−16

Design data of the inflection point and the arrest point of each lens inthe camera optical lens 20 according to Embodiment 2 of the presentinvention are shown in Tables 7 and 8.

TABLE7 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 1.515 / / P1R2 11.315 / / P2R1 2 0.805 1.935 / P2R2 1 0.895 / / P3R1 1 1.175 / / P3R2 11.915 / / P4R1 2 1.285 1.965 / P4R2 2 1.095 2.125 / P5R1 1 2.155 / /P5R2 1 2.255 / / P6R1 1 0.955 / / P6R2 1 0.985 / / P7R1 2 1.335 3.055 /P7R2 2 1.345 3.705 / P8R1 3 1.155 3.345 3.565 P8R2 3 1.535 4.045 4.775P9R1 2 0.715 3.565 / P9R2 2 0.945 5.965 /

TABLE 8 Number of Arrest point arrest points position 1 P1R1 0 / P1R2 11.895 P2R1 1 1.385 P2R2 1 1.635 P3R1 0 / P3R2 0 / P4R1 1 1.715 P4R2 11.545 P5R1 0 / P5R2 0 / P6R1 1 1.615 P6R2 1 1.685 P7R1 1 2.085 P7R2 12.235 P8R1 1 1.805 P8R2 1 2.205 P9R1 1 1.425 P9R2 1 2.255

FIG. 6 and FIG. 7 are schematic diagrams of a longitudinal aberrationand a lateral color of the camera optical lens 20 after light having awavelength of 656 nm, 587 nm, 546 nm, 486 nm, and 435 nm passes throughthe camera optical lens 20 according to Embodiment 2, respectively. FIG.8 is a schematic diagram of a field curvature and a distortion afterlight having a wavelength of 546 nm passes through the camera opticallens 20 according to Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies various conditions.

In this embodiment, an entrance pupil diameter ENPD of the cameraoptical lens 20 is 4.014 mm, a full-field image height IH is 8.000 mm,and a field of view FOV in a diagonal direction is 90.20°. The cameraoptical lens 20 satisfies design requirements for large aperture,wide-angle, and ultra-thinness. The on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalperformances.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1, and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween are listed below.

In this embodiment, the image side surface of the eighth lens L8 isconvex in the paraxial region.

Design data of the camera optical lens 30 of Embodiment 3 of the presentinvention are shown in Tables 9 and 10.

TABLE 9 R d nd vd S1 ∞  d0= −0.423 R1 3.364  d1= 0.386 nd1 1.5450 v155.81 R2 3.770  d2= 0.317 R3 6.433  d3= 0.289 nd2 1.6700 v2 19.39 R44.846  d4= 0.132 R5 4.926  d5= 0.791 nd3 1.5450 v3 55.81 R6 −23.107  d6=0.063 R7 8.078  d7= 0.344 nd4 1.5444 v4 55.82 R8 13.823  d8= 0.149 R910.744  d9= 0.221 nd5 1.6610 v5 20.53 R10 6.746 d10= 0.974 R11 7.985d11= 0.344 nd6 1.6610 v6 20.53 R12 6.873 d12= 0.558 R13 5.286 d13= 0.591nd7 1.6610 v7 20.53 R14 4.727 d14= 0.561 R15 7.793 d15= 1.546 nd8 1.5450v8 55.81 R16 −4.709 d16= 0.173 R17 6.824 d17= 0.419 nd9 1.5450 v9 55.81R18 1.658 d18= 0.700 R19 ∞ d19= 0.210 ndg 1.5168 vg 64.17 R20 ∞ d20=0.889

Table 10 shows aspherical surface data of each lens in the cameraoptical lens 30 of Embodiment 3 of the present invention.

TABLE 10 Conic coefficient Aspherical surface coefficient k A4 A6 A8 A10A12 R1 −1.0903E−01 −3.8411E−03 −1.8418E−04 −1.9226E−03  1.4963E−03−7.6772E−04 R2 −6.2862E+00  1.0536E−02 −3.3676E−03 −1.3655E−03 1.4679E−03 −8.3819E−04 R3  3.3646E+00 −2.0630E−02  2.6317E−03−4.7539E−03  4.0359E−03 −2.0541E−03 R4 −3.6316E+01  1.3416E−02−1.9510E−02  1.0283E−02 −3.7292E−03  8.8350E−04 R5 −8.1511E+00−4.7064E−03  3.3165E−03 −3.7497E−03  2.8750E−03 −1.2933E−03 R6 8.1041E+01 −6.0675E−02  5.1127E−02 −3.1493E−02  1.4305E−02 −4.5615E−03R7 −6.2044E+01 −3.3443E−02  3.5109E−02 −2.1375E−02  9.0456E−03−2.9218E−03 R8 −6.0354E+01  1.9136E−02 −1.6237E−02  8.7005E−03−3.6495E−03  8.4417E−04 R9  1.4215E+01  1.0981E−03 −4.1109E−03 5.4577E−04  1.4268E−03 −8.9245E−04 R10  6.1036E+00 −7.5672E−03 7.4972E−04  1.0950E−04  2.6669E−04 −3.0457E−05 R11 −4.5264E+01−2.0123E−03 −1.2889E−03 −5.8774E−04  5.8217E−04 −2.4616E−04 R12−2.9444E+01 −5.2807E−03  1.0014E−03 −1.8700E−03  9.9843E−04 −3.0707E−04R13 −2.0742E+01 −1.4978E−03  2.3052E−03 −1.9540E−03  7.2796E−04−1.8295E−04 R14 −2.7053E+01  4.8875E−03 −3.2324E−03  1.0035E−03−2.8107E−04  5.2377E−05 R15 −6.1962E+01  8.2898E−03 −4.9472E−03 7.9871E−04 −1.2042E−04  1.3770E−05 R16 −5.3473E+01  2.7411E−02−7.3996E−03  9.1261E−04 −7.0466E−05  3.5366E−06 R17 −9.9000E+01−1.9493E−02  2.1712E−03 −1.3991E−04  5.9153E−06 −1.6419E−07 R18−6.9235E+00 −1.9429E−02  2.4907E−03 −2.0054E−04  1.0386E−05 −3.4840E−07Conic coefficient Aspherical surface coefficient k A14 A16 A18 A20 R1−1.0903E−01 2.3652E−04 −4.4484E−05 4.7007E−06 −2.1215E−07 R2 −6.2862E+002.7009E−04 −5.3705E−05 6.3446E−06 −3.2786E−07 R3  3.3646E+00 6.4316E−04−1.2022E−04 1.2293E−05 −5.2080E−07 R4 −3.6316E+01 −1.3438E−04  1.6384E−05 −2.0712E−06   1.5257E−07 R5 −8.1511E+00 3.4120E−04−5.0996E−05 3.8341E−06 −1.0574E−07 R6  8.1041E+01 9.7364E−04 −1.2910E−049.3393E−06 −2.7160E−07 R7 −6.2044E+01 6.7597E−04 −1.0212E−04 8.9794E−06−3.4662E−07 R8 −6.0354E+01 −8.8674E−05   2.0483E−07 7.1566E−07−3.9527E−08 R9  1.4215E+01 2.6046E−04 −4.3217E−05 3.9451E−06 −1.5569E−07R10  6.1036E+00 −3.1185E−05   9.9348E−06 −1.1265E−06   4.3883E−08 R11−4.5264E+01 6.1051E−05 −9.6163E−06 8.9021E−07 −3.6860E−08 R12−2.9444E+01 5.8496E−05 −6.9782E−06 4.8158E−07 −1.4544E−08 R13−2.0742E+01 3.0438E−05 −3.1661E−06 1.8186E−07 −4.3154E−09 R14−2.7053E+01 −6.0973E−06   4.2494E−07 −1.6195E−08   2.5954E−10 R15−6.1962E+01 −9.3387E−07   3.5080E−08 −6.7587E−10   5.2164E−12 R16−5.3473E+01 −1.1246E−07   2.1525E−09 −2.2437E−11   9.7368E−14 R17−9.9000E+01 2.9175E−09 −3.1562E−11 1.8763E−13 −4.6731E−16 R18−6.9235E+00 7.4356E−09 −9.6535E−11 6.9148E−13 −2.0874E−15

Design data of the inflection point and the arrest point of each lens inthe camera optical lens 30 according to Embodiment 3 of the presentinvention are shown in Tables 11 and 12.

TABLE 11 Number Inflexion Inflexion Inflexion Inflexion of point pointpoint point inflexion position position position position points 1 2 3 4P1R1 1 1.455 / / / P1R2 1 1.295 / / / P2R1 2 0.845 1.955 / / P2R2 10.915 / / / P3R1 1 1.775 / / / P3R2 1 1.735 / / / P4R1 2 1.235 1.995 / /P4R2 2 1.125 2.165 / / P5R1 1 2.205 / / / P5R2 1 2.305 / / / P6R1 10.965 / / / P6R2 1 0.975 / / / P7R1 2 1.305 3.035 / / P7R2 2 1.315 3.685/ / P8R1 3 1.115 3.295 3.635 / P8R2 4 0.585 1.625 4.015 4.765 P9R1 20.565 3.375 / / P9R2 2 0.885 5.785 / /

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 / / P1R2 1 1.875 / P2R1 1 1.445 / P2R2 1 1.675 / P3R10 / / P3R2 0 / / P4R1 1 1.715 / P4R2 1 1.595 / P5R1 0 / / P5R2 0 / /P6R1 1 1.635 / P6R2 1 1.685 / P7R1 1 2.065 / P7R2 1 2.225 / P8R1 1 1.745/ P8R2 2 1.385 1.825 P9R1 2 1.105 5.875 P9R2 1 2.375 /

FIG. 10 and FIG. 11 are schematic diagrams of a longitudinal aberrationand a lateral color after light having a wavelength of 656 nm, 587 nm,546 nm, 486 nm, and 435 nm passes through the camera optical lens 30according to Embodiment 3. FIG. 12 is a schematic diagram of a fieldcurvature and a distortion of the camera optical lens 30 after lighthaving a wavelength of 546 nm passes through the camera optical lens 30according to Embodiment 3.

Table 13 below shows numerical values corresponding to each condition inthis embodiment according to the above conditions. It is appreciatedthat, the cameral optical lens 30 in this embodiment satisfies the aboveconditions.

In this embodiment, an entrance pupil diameter ENPD of the cameraoptical lens 30 is 4.013 mm, a full-field image height IH is 8.000 mm,and a field of view FOV in a diagonal direction is 90.20°. The cameraoptical lens 30 satisfies design requirements for large aperture,wide-angle and ultra-thinness. The on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalperformances.

TABLE 13 Parameters and Embodi- Embodi- Embodi- conditions ment 1 ment 2ment 3 f1/f 2.01 3.85 5.46 d15/d16 1.51 4.44 8.94 f  7.975 7.827 7.825f1 16.031 30.145 42.727 f2 −29.686 −31.791 −31.266 f3 9.708 7.698 7.494f4 56.036 50.706 34.808 f5 −34.148 −30.613 −27.735 f6 −52.851 −77.024−84.282 f7 −59.977 −178.870 −115.864 f8 14.420 14.976 5.608 f9 −8.495−8.636 −4.118  f12 30.851 242.414 −154.342 FNO 1.95 1.95 1.95 TTL 9.6079.607 9.657 IH 8.000 8.000 8.000 FOV 89.00° 90.20° 90.20°

The above are only preferred embodiments of the present disclosure.Here, it should be noted that those skilled in the art may makemodifications without departing from the inventive concept of thepresent disclosure, but these shall fall into the protection scope ofthe present disclosure.

What is claimed is:
 1. A camera optical lens, comprising from an objectside to an image side: a first lens; a second lens having negativerefractive power; a third lens; a fourth lens; a fifth lens; a sixthlens; a seventh lens; an eighth lens; and a ninth lens, wherein thecamera optical lens satisfies following conditions:2.00≤f1/f≤5.50; and1.50≤d15/d16≤9.00, where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; d15 denotes anon-axis thickness of the eighth lens; and d16 denotes an on-axisdistance from an image side surface of the eighth lens to an object sidesurface of the ninth lens.
 2. The camera optical lens as described inclaim 1, wherein the camera optical lens satisfies a followingcondition:1.00≤(R17+R18)/(R17−R18)≤3.50, where R17 denotes a central curvatureradius of the object side surface of the ninth lens; and R18 denotes acentral curvature radius of an image side surface of the ninth lens. 3.The camera optical lens as described in claim 1, wherein the cameraoptical lens satisfies following conditions:−35.14≤(R1+R2)/(R1−R2)≤−3.11; and0.02≤d1/TTL≤0.08, where R1 denotes a central curvature radius of anobject side surface of the first lens; R2 denotes a central curvatureradius of an image side surface of the first lens; d1 denotes an on-axisthickness of the first lens; and TTL denotes a total optical length fromthe object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 4. The camera optical lens asdescribed in claim 1, wherein the camera optical lens satisfiesfollowing conditions:−8.12≤f2/f≤−2.48;2.14≤(R3+R4)/(R3−R4)≤10.66; and0.01≤d3/TTL≤0.05, where f2 denotes a focal length of the second lens; R3denotes a central curvature radius of an object side surface of thesecond lens; R4 denotes a central curvature radius of an image sidesurface of the second lens; d3 denotes an on-axis thickness of thesecond lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 5. The camera optical lens as described in claim 1,the camera optical lens satisfies following conditions:0.48≤f3/f≤1.83;−1.30≤(R5+R6)/(R5−R6)≤−0.16; and0.03≤d5/TTL≤0.12, where f3 denotes a focal length of the third lens; R5denotes a central curvature radius of an object side surface of thethird lens; R6 denotes a central curvature radius of an image sidesurface of the third lens; d5 denotes an on-axis thickness of the thirdlens; and TTL denotes a total optical length from an object side surfaceof the first lens to an image plane of the camera optical lens along anoptic axis.
 6. The camera optical lens as described in claim 1, whereinthe camera optical lens satisfies following conditions:2.22≤f4/f≤10.54;−12.60≤(R7+R8)/(R7−R8)≤−2.54; and0.02≤d7/TTL≤0.05, where f4 denotes a focal length of the fourth lens; R7denotes a central curvature radius of an object side surface of thefourth lens; R8 denotes a central curvature radius of an image sidesurface of the fourth lens; d7 denotes an on-axis thickness of thefourth lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 7. The camera optical lens as described in claim 1,wherein the camera optical lens satisfies following conditions:−8.56≤f5/f≤−−2.36;2.19≤(R9+R10)/(R9−R10)≤8.15; and0.01≤d9/TTL≤0.03, where f5 denotes a focal length of the fifth lens; R9denotes a central curvature radius of an object side surface of thefifth lens; R10 denotes a central curvature radius of an image sidesurface of the fifth lens; d9 denotes an on-axis thickness of the fifthlens; and TTL denotes a total optical length from an object side surfaceof the first lens to an image plane of the camera optical lens along anoptic axis.
 8. The camera optical lens as described in claim 1, whereinthe camera optical lens satisfies following conditions:−21.54≤f6/f≤−4.42;3.09≤(R11+R12)/(R11−R12)≤20.04; and0.02≤d11/TTL≤0.08, where f6 denotes a focal length of the sixth lens;R11 denotes a central curvature radius of an object side surface of thesixth lens; R12 denotes a central curvature radius of an image sidesurface of the sixth lens; d11denotes an on-axis thickness of the sixthlens; and TTL denotes a total optical length from an object side surfaceof the first lens to an image plane of the camera optical lens along anoptic axis.
 9. The camera optical lens as described in claim 1, whereinthe camera optical lens satisfies following conditions:−45.71≤f7/f≤−5.01;5.48≤(R13+R14)/(R13−R14)≤33.29; and0.03≤d13/TTL≤0.09, where f7 denotes a focal length of the seventh lens;R13 denotes a central curvature radius of an object side surface of theseventh lens; R14 denotes a central curvature radius of an image sidesurface of the seventh lens; d13 denotes an on-axis thickness of theseventh lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 10. The camera optical lens as described in claim1, wherein the camera optical lens satisfies following conditions:−0.36≤f8/f≤2.87;−6.01≤(R15+R16)/(R15−R16)≤0.37; and0.07≤d15/TTL≤0.24, where f8 denotes a focal length of the eighth lens;R15 denotes a central curvature radius of an object side surface of theeighth lens; R16 denotes a central curvature radius of the image sidesurface of the eighth lens; and TTL denotes a total optical length froman object side surface of the first lens to an image plane of the cameraoptical lens along an optic axis.
 11. The camera optical lens asdescribed in claim 1, wherein the camera optical lens satisfiesfollowing conditions:−2.21≤f9/f≤−0.35; and0.02≤d17/TTL≤0.09, where f9 denotes a focal length of the ninth lens;d17 denotes an on-axis thickness of the ninth lens; and TTL denotes atotal optical length from an object side surface of the first lens to animage plane of the camera optical lens along an optic axis.